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Question

what should be the nominal value for airflow meter ; draw=      kg/h      voltage=   V   and the inject. duration at idle --- ms for a bmw 318i my 2000 . ps the voltage [airfl voltage] KOEO

Submitted: 92 days and 8 hours ago.
Category: BMW
Value: $18
Status: AWAITING CUSTOMER ACTION
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Optional Information

Year: 2000
Make: BMW
Model: 318i
Engine: m 43??

Already Tried:
vehicle drives better with airmass disconnected

Posted by jacob 92 days and 7 hours ago.

Answer

<p>Hello, The kg/h should be about 14 to 18. I am not sure as to the voltage but this would correspond to the kg/h reading.</p><p>As far as the injector pulse width there is not any published information that I know of.</p><p>One thing I would suggest checking is the vacuum lines going to the injectors. These come up from under the intake manifold. Also check the crank-case pressure. should be about 3- 6 hg. It is not uncommon for the ventilation valve to fail. This is located on top toward the back of the intake and is a round black plastic. </p><p>Of course a vacuum leak will alter the measurement of the air meter and skew the entire mixture. By unpluging it you are actually richening the mixture as a default. This also makes me think you have a severe vacuum leak.</p><p>Jacob.</p>

92 days and 7 hours ago.

Reply

engine has been sprayed with carb clnr [all evap hoses ok ]
car falls on its face when floored
lack of power
fuel press ok 3 bar
no exh restriction

Posted by jacob 92 days and 7 hours ago.

Answer

<p>What is the airflow reading?</p><p>Have you checked the crankcase ventilation?-"vent valve"</p><p>If the ventilation valve is good, and there are no vacuum leaks ,fuel pressure good, it does sound like an airflow meter.</p>

92 days and 6 hours ago.

Reply

no p0101[120] or p0110[121] codes

the only code is p0443[113] which i dont see as the cause

92 days and 6 hours ago.

Reply

what would be the final answer [correct]?
airflow or dme

Answer

<p>If you have checked all of the above stated and are known to be good then an airflow meter. Be sure to check the ventilation system first as this can cause an internal vacuum leak.</p>

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Expert: jacob
Pos. Feedback: 97.4 %
Accepts: 
Answered: 8/22/2009

BMW Technician

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